WordPress Shopping Cart (WP EasyCart) Plugin for WordPress contains a flaw that allows a remote attacker to execute arbitrary PHP code. This flaw exists because the /inc/amfphp/administration/banneruploaderscript.php script does not properly verify or sanitize user-uploaded files. By uploading a .php file, the remote system will place the file in a user-accessible path. Making a direct request to the uploaded file will allow the attacker to execute the script with the privileges of the web server. In versions 3.0.8 and below authentication can be done by using the WordPress credentials of a user with any role. In later versions, a valid EasyCart admin password will be required that is in use by any admin user. A default installation of EasyCart will setup a user called “demouser” with a preset password